How to model an old curved tv screen?
ad Plane, Subdivide, Modifier-Cast>Sphere controled by Empty to get base curvature of glass





ad another Plane as TV-glass, Modifier-Cast>Sphere to set oval sides from front view, Modifier-ShrinkWrap to get base curvature of first Plane, Select edge loop and Extrude it in Y axis (to avoid shrinking this extrude create Vertex group of front faces and assign it to modifier)





select extruded faces, duplicate, separate ... and you have a frame, ad solidify modifier ... TV box as ussual :)




Note: 
- use Subdivison Modifier as much as you need
- thanks to modifiers you can adjust front and side shape any time to make it more or less sphery :)